arm: keystone: Move cmd_ddr3 to a common place

Move cmd_ddr3 to cmd/ti in order to make
it build for non-keystone TI platforms.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
[trini: Rename to ddr3.c not cmd_ddr3.c]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/cmd/Makefile b/cmd/Makefile
index ce65cef..5ab47cb 100644
--- a/cmd/Makefile
+++ b/cmd/Makefile
@@ -159,6 +159,7 @@
 obj-y += nvedit.o
 
 obj-$(CONFIG_ARCH_MVEBU) += mvebu/
+obj-$(CONFIG_TI_COMMON_CMD_OPTIONS) += ti/
 
 filechk_data_gz = (echo "static const char data_gz[] ="; cat $< | scripts/bin2c; echo ";")